Internetworking With TCP/IP vol 1 -- Part 1

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Internetworking: an overview of concepts, terminology, and technology underlying the TCP/IP Internet protocol suite and the architecture of an internet.

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Nội dung Text: Internetworking With TCP/IP vol 1 -- Part 1

Internetworking With TCP/IP Douglas Comer Computer Science Department Purdue University 250 N. University Street West Lafayette, IN 47907-2066 http://www.cs.purdue.edu/people/comer © Copyright 2005. All rights reserved. This document may not be reproduced by any means without written consent of the author.
PART I COURSE OVERVIEW AND INTRODUCTION Internetworking With TCP/IP vol 1 -- Part 1 1 2005
Topic And Scope Internetworking: an overview of concepts, terminology, and technology underlying the TCP/IP Internet protocol suite and the architecture of an internet. Internetworking With TCP/IP vol 1 -- Part 1 2 2005
You Will Learn d Terminology (including acronyms) d Concepts and principles – The underlying model – Encapsulation – End-to-end paradigm d Naming and addressing d Functions of protocols including ARP, IP, TCP, UDP, SMTP, FTP, DHCP, and more d Layering model Internetworking With TCP/IP vol 1 -- Part 1 3 2005
You Will Learn (continued) d Internet architecture and routing d Applications Internetworking With TCP/IP vol 1 -- Part 1 4 2005
What You Will NOT Learn d A list of vendors, hardware products, software products, services, comparisons, or prices d Alternative internetworking technologies (they have all disappeared!) Internetworking With TCP/IP vol 1 -- Part 1 5 2005
Schedule Of Topics d Introduction d Review of – Network hardware – Physical addressing d Internet model and concept d Internet (IP) addresses d Higher-level protocols and the layering principle d Examples of internet architecture Internetworking With TCP/IP vol 1 -- Part 1 6 2005
Schedule Of Topics (continued) d Routing update protocols d Application-layer protocols Internetworking With TCP/IP vol 1 -- Part 1 7 2005
Why Study TCP/IP? d The Internet is everywhere d Most applications are distributed Internetworking With TCP/IP vol 1 -- Part 1 8 2005
Remainder Of This Section d History of Internet protocols (TCP/IP) d Organizations d Documents Internetworking With TCP/IP vol 1 -- Part 1 9 2005
Vendor Independence d Before TCP/IP and the Internet – Only two sources of network protocols * Speciﬁc vendors such as IBM or Digital Equipment * Standards bodies such as the ITU (formerly known as CCITT) d TCP/IP – Vendor independent Internetworking With TCP/IP vol 1 -- Part 1 10 2005
Who Built TCP/IP? d Internet Architecture Board (IAB) d Originally known as Internet Activities Board d Evolved from Internet Research Group d Forum for exchange among researchers d About a dozen members d Reorganized in 1989 and 1993 d Merged into the Internet Society in 1992 Internetworking With TCP/IP vol 1 -- Part 1 11 2005
Components Of The IAB Organization d IAB (Internet Architecture Board) – Board that oversees and arbitrates – URL is http://www.iab.org/iab d IRTF (Internet Research Task Force) – Coordinates research on TCP/IP and internetworking – Virtually defunct, but may re-emerge Internetworking With TCP/IP vol 1 -- Part 1 12 2005
Components Of The IAB Organization (continued) d IETF (Internet Engineering Task Force) – Coordinates protocol and Internet engineering – Headed by Internet Engineering Steering Group (IESG) – Divided into N areas (N is 10 plus or minus a few) – Each area has a manager – Composed of working groups (volunteers) – URL is http://www.ietf.org Internetworking With TCP/IP vol 1 -- Part 1 13 2005
ICANN d Internet Corporation for Assigned Names and Numbers http://www.icann.org d Formed in 1998 to subsume IANA contract d Not-for-proﬁt managed by international board d Now sets policies for addresses and domain names d Support organizations – Address allocation (ASO) – Domain Names (DNSO) – Protocol parameter assignments (PSO) Internetworking With TCP/IP vol 1 -- Part 1 14 2005
ICANN d Internet Corporation for Assigned Names and Numbers http://www.icann.org d Formed in 1998 to subsume IANA contract d Not-for-proﬁt managed by international board d Now sets policies for addresses and domain names d Support organizations – Address allocation (ASO) – Domain Names (DNSO) – Protocol parameter assignments (PSO) d For fun see http://www.icannwatch.org Internetworking With TCP/IP vol 1 -- Part 1 14 2005
World Wide Web Consortium d Organization to develop common protocols for World Wide Web d Open membership d Funded by commercial members d URL is http://w3c.org Internetworking With TCP/IP vol 1 -- Part 1 15 2005
Internet Society d Organization that promotes the use of the Internet d Formed in 1992 d Not-for-proﬁt d Governed by a board of trustees d Members worldwide d URL is http://www.isoc.org Internetworking With TCP/IP vol 1 -- Part 1 16 2005
Protocol Speciﬁcations And Documents d Protocols documented in series of reports d Documents known as Request For Comments (RFCs) Internetworking With TCP/IP vol 1 -- Part 1 17 2005
RFCs d Series of reports that include – TCP/IP protocols – The Internet – Related technologies d Edited, but not peer-reviewed like scientiﬁc journals d Contain: – Proposals – Surveys and measurements – Protocol standards Internetworking With TCP/IP vol 1 -- Part 1 18 2005